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/*
* copyright (c) 2007 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
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#ifndef AVUTIL_AES_H
#define AVUTIL_AES_H |
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#include <stdint.h>
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extern const int av_aes_size;
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struct AVAES;
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/** |
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* Initializes an AVAES context. |
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* @param key_bits 128, 192 or 256
* @param decrypt 0 for encryption, 1 for decryption
*/ |
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int av_aes_init(struct AVAES *a, const uint8_t *key, int key_bits, int decrypt); |
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/** |
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* Encrypts / decrypts. |
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* @param count number of 16 byte blocks
* @param dst destination array, can be equal to src
* @param src source array, can be equal to dst |
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* @param iv initialization vector for CBC mode, if NULL then ECB will be used |
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* @param decrypt 0 for encryption, 1 for decryption
*/ |
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void av_aes_crypt(struct AVAES *a, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt); |
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#endif /* AVUTIL_AES_H */ |